WO2005091682A1 - 有機el素子およびその製造方法 - Google Patents
有機el素子およびその製造方法 Download PDFInfo
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- WO2005091682A1 WO2005091682A1 PCT/JP2005/004829 JP2005004829W WO2005091682A1 WO 2005091682 A1 WO2005091682 A1 WO 2005091682A1 JP 2005004829 W JP2005004829 W JP 2005004829W WO 2005091682 A1 WO2005091682 A1 WO 2005091682A1
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- 229920006362 Teflon® Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- LPFLACWOQOYUSG-UHFFFAOYSA-K [Al+3].CC1=C(C(=C(C=C1C)C)C)[O-].CC1=C(C(=C(C=C1C)C)C)[O-].CC1=C(C(=C(C=C1C)C)C)[O-] Chemical compound [Al+3].CC1=C(C(=C(C=C1C)C)C)[O-].CC1=C(C(=C(C=C1C)C)C)[O-].CC1=C(C(=C(C=C1C)C)C)[O-] LPFLACWOQOYUSG-UHFFFAOYSA-K 0.000 description 1
- RKIDLKHMWBDVER-UHFFFAOYSA-K [Al+3].CC1=C(C(=CC=C1C)C)[O-].CC1=C(C(=CC=C1C)C)[O-].CC1=C(C(=CC=C1C)C)[O-] Chemical compound [Al+3].CC1=C(C(=CC=C1C)C)[O-].CC1=C(C(=CC=C1C)C)[O-].CC1=C(C(=CC=C1C)C)[O-] RKIDLKHMWBDVER-UHFFFAOYSA-K 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 229910001515 alkali metal fluoride Inorganic materials 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 125000005037 alkyl phenyl group Chemical group 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000005354 aluminosilicate glass Substances 0.000 description 1
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 1
- 229940027991 antiseptic and disinfectant quinoline derivative Drugs 0.000 description 1
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 125000005605 benzo group Chemical group 0.000 description 1
- XJHABGPPCLHLLV-UHFFFAOYSA-N benzo[de]isoquinoline-1,3-dione Chemical class C1=CC(C(=O)NC2=O)=C3C2=CC=CC3=C1 XJHABGPPCLHLLV-UHFFFAOYSA-N 0.000 description 1
- CCAADOWYZMBENE-UHFFFAOYSA-K bis[(2-methylquinolin-8-yl)oxy]-phenoxyalumane Chemical compound C12=NC(C)=CC=C2C=CC=C1O[Al](OC=1C2=NC(C)=CC=C2C=CC=1)OC1=CC=CC=C1 CCAADOWYZMBENE-UHFFFAOYSA-K 0.000 description 1
- 229910002115 bismuth titanate Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- KOPBYBDAPCDYFK-UHFFFAOYSA-N caesium oxide Chemical compound [O-2].[Cs+].[Cs+] KOPBYBDAPCDYFK-UHFFFAOYSA-N 0.000 description 1
- 229910001942 caesium oxide Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 125000001951 carbamoylamino group Chemical group C(N)(=O)N* 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010538 cationic polymerization reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000010549 co-Evaporation Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- ONCCWDRMOZMNSM-FBCQKBJTSA-N compound Z Chemical compound N1=C2C(=O)NC(N)=NC2=NC=C1C(=O)[C@H]1OP(O)(=O)OC[C@H]1O ONCCWDRMOZMNSM-FBCQKBJTSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 125000000332 coumarinyl group Chemical class O1C(=O)C(=CC2=CC=CC=C12)* 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 239000012954 diazonium Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-O diazynium Chemical compound [NH+]#N IJGRMHOSHXDMSA-UHFFFAOYSA-O 0.000 description 1
- OSXYHAQZDCICNX-UHFFFAOYSA-N dichloro(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](Cl)(Cl)C1=CC=CC=C1 OSXYHAQZDCICNX-UHFFFAOYSA-N 0.000 description 1
- 238000007607 die coating method Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
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- 125000003700 epoxy group Chemical group 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical class OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229910000174 eucryptite Inorganic materials 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 229910052839 forsterite Inorganic materials 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 150000007857 hydrazones Chemical class 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229940117955 isoamyl acetate Drugs 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 description 1
- 229940011051 isopropyl acetate Drugs 0.000 description 1
- GWYFCOCPABKNJV-UHFFFAOYSA-M isovalerate Chemical compound CC(C)CC([O-])=O GWYFCOCPABKNJV-UHFFFAOYSA-M 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000990 laser dye Substances 0.000 description 1
- 239000011968 lewis acid catalyst Substances 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000434 metal complex dye Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000037230 mobility Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000002250 neutron powder diffraction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical class OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- CUNAYEBQCZORAP-UHFFFAOYSA-N phenyl(trichloromethyl)silane Chemical compound ClC(Cl)(Cl)[SiH2]C1=CC=CC=C1 CUNAYEBQCZORAP-UHFFFAOYSA-N 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QCTJRYGLPAFRMS-UHFFFAOYSA-N prop-2-enoic acid;1,3,5-triazine-2,4,6-triamine Chemical class OC(=O)C=C.NC1=NC(N)=NC(N)=N1 QCTJRYGLPAFRMS-UHFFFAOYSA-N 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 150000003252 quinoxalines Chemical class 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000009103 reabsorption Effects 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical class [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
- 150000007979 thiazole derivatives Chemical class 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 125000005409 triarylsulfonium group Chemical group 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- DWAWYEUJUWLESO-UHFFFAOYSA-N trichloromethylsilane Chemical compound [SiH3]C(Cl)(Cl)Cl DWAWYEUJUWLESO-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
- 229910052644 β-spodumene Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
- H05B33/04—Sealing arrangements, e.g. against humidity
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/871—Self-supporting sealing arrangements
- H10K59/8722—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
Definitions
- the present invention relates to an organic EL device and a method for manufacturing the same.
- organic electroluminescent devices (hereinafter referred to as organic EL devices) have been actively studied. This involves depositing a hole-transporting material such as triphenyldiamine (TPD) on the hole-injecting electrode to form a thin film, further laminating a fluorescent substance such as an aluminum quinolinol complex (Alq3) as a light-emitting layer, and further working with a work function such as Mg. small by the metal electrode element having a basic structure forming the (electron injection electrode), are noted by the very high luminance of several 100 to several 10, OOOcd / m 2 at 10V before and after the voltage obtained in the next generation It is expected to be applied to displays and the like.
- TPD triphenyldiamine
- Alq3 aluminum quinolinol complex
- the organic EL element has a problem that it is extremely weak to moisture.
- a non-light-emitting region called a dark spot occurs, or light emission of a predetermined quality cannot be maintained. A problem has arisen.
- organic EL devices such as Patent Document 1 and Patent Document 2 have been proposed.
- these organic EL elements can suppress deterioration of the organic EL structure over time due to moisture.
- Patent Document 3 discloses a laminated body in which an organic light emitting layer containing an organic compound is arranged between electrodes facing each other on a glass substrate.
- An organic EL device in which a sealing glass is arranged with a space above the laminated body, wherein a sealing material layer is provided near the outer periphery of the sealing glass, and the sealing material layer is interposed therebetween.
- An organic EL device wherein an ultraviolet curable adhesive is used for the sealing material layer, in addition to the organic EL device in which the substrate glass and the sealing glass are sealed and bonded. It has been. Furthermore, it is described that this organic EL element can use a sealing plate having no concave portion such as a flat glass by using a gap material or a spacer for the sealing material layer.
- the ultraviolet curing type epoxy resin conventionally used has a problem that when the thickness is about 100 ⁇ m or more, it is difficult for ultraviolet rays to penetrate into the inside and cannot be sufficiently cured. ⁇ ⁇ Not practical as a fat.
- Patent Document 1 JP 2001-57287 A
- Patent Document 2 JP-A-2000-195662
- Patent Document 3 JP-A-11 045778
- the present invention has been made in view of the above-described problems, and it is intended to maintain the stable light-emitting characteristics of an organic EL structure for a long period of time and to manufacture the organic EL structure easily and inexpensively in a manufacturing process. It is an object of the present invention to provide an organic EL device capable of performing the method and a method for manufacturing the same. Means for solving the problem
- the substrate and the sealing plate contain curable methylphenyl silicone resin and a refractory filler having specific compositions.
- a spacer formed from the composition to be sandwiched is sandwiched, and at least one of a bonding portion between the substrate and the spacer and a bonding portion between the sealing plate and the spacer is bonded.
- the present invention provides the following (1)-(7).
- the composition is formed from a composition containing the above-mentioned spacer force-curable methylphenyl silicone resin and a refractory filler, and based on the total amount of the methylphenyl silicone resin and the refractory filler in the composition.
- the amount of the refractory filler is 10 to 80% by mass, and the methyl ferrous silicone resin has a molar ratio of ferrule to methyl groups of 0.1 to 1.2,
- An organic material wherein at least one of a joining portion between the substrate and the spacer and a joining portion between the sealing plate and the spacer is sealed via an adhesive.
- EL element
- (6) a first step of applying a spacer composition to one surface of the sealing plate and heat-curing to form a spacer; A second step of applying an adhesive to the hardened surface of the spacer; an adhesive applied to the surface of the spacer in the second step; and an organic EL structure. A third step of bringing the bonded substrate into close contact with the substrate and irradiating the adhesive with ultraviolet rays to cure the adhesive.
- the organic EL device of the present invention can be manufactured easily and inexpensively in the manufacturing process, while maintaining stable light emitting characteristics of the organic EL structure for a long period of time.
- FIG. 1 is a schematic cross-sectional view showing one configuration example of the organic EL device of the present invention.
- FIG. 2 is a schematic cross-sectional view showing another configuration example of the organic EL device of the present invention. Explanation of symbols
- the present invention includes a substrate, an organic EL structure formed on the substrate, and a sealing plate for sealing the organic EL structure, wherein the substrate and the sealing plate are a spacer.
- the spacer is formed from a composition containing a curable methylphenol silicone resin and a refractory filler, and Methyl Hue
- the amount of the refractory filler to the total of the silicone resin and the refractory filler is 10 to 80% by mass, and the molar ratio of the methyl group to the methyl group is 0 to 80% by mass.
- at least one of a joint portion between the substrate and the spacer and a joint portion between the sealing plate and the spacer is sealed with an adhesive.
- the organic EL device is characterized in that:
- the organic EL device of the present invention uses a composition having a high adhesive strength to glass or the like having high moisture resistance for the spacer, so that even when the spacer becomes thicker. In addition, it allows moisture to penetrate inside the organic EL device 1, and can maintain the stable light emitting characteristics of the organic EL structure for a long time. In addition, by using a spacer having such characteristics, it is not necessary to form a concave portion in the sealing plate, so that it can be manufactured easily and inexpensively in a manufacturing process. First, the spacer used in the present invention will be described in detail.
- the spacer used in the present invention is formed from a composition containing a curable methylphenyl silicone resin and a refractory filler (hereinafter, also referred to as a composition for spacer).
- the thickness of the spacer depends on the design of the organic EL element such as the thickness of the organic EL structure, but is preferably 200 to 600 m for a general organic EL element. When the thickness is within the above range, the production is easy, and the height for holding the organic EL structure and, if desired, the water trapping layer can be secured. In this regard, the thickness of the spacer is more preferably 300 to 500 ⁇ m.
- a hydrophilic group on the surface of the spacer.
- the surface of the spacer is irradiated with ultraviolet light to introduce a hydrophilic group, and the wettability (contact angle with water) of the spacer and the adhesive is made approximately the same (for example, The adhesiveness can be improved by reducing the contact angle of the spacer surface to water until it becomes almost equal to the contact angle of the cured product of the adhesive to water. Therefore, the light emitting characteristics of the organic EL structure can be maintained for a longer period.
- a silane coupling agent may be applied to the spacer surface for the same purpose.
- a spacer may be formed by adding a silane coupling agent to the spacer composition described below.
- the silanol groups of the methylphenol silicone resin have an affinity with the surface of the refractory filler.
- the mixing of methylphenol silicone resin with the refractory filler can be controlled uniformly and freely.
- a semi-cured product that can sufficiently exhibit the characteristics of both the methylphenol silicone resin and the refractory filler is obtained, and the composition that is the semi-cured product is particularly suitable for sealing a glass member and a metal member. Suitable for wearing.
- the bonding strength is high due to the low-temperature adhesion to the glass member.Excellent bonding processability, high mechanical heat resistance over a long period of time, high gas leak resistance, high airtightness, and good heat resistance dimensional stability. And so on, and also has excellent moisture permeation resistance particularly required for the spacer composition used in the present invention.
- curable silicone resins are excellent in heat resistance, weather resistance, moisture resistance, electrical properties, and the like, and are therefore frequently used as materials for electric, electronic, precision equipment, and the like. It is also known to improve the strength by blending the same. Also, for example, a curable silicone resin modified with an epoxy resin has excellent strength, heat resistance, moisture resistance, and mold release properties. Compositions that improve the mechanical strength of molded articles are known! The curable silicone resin or its modified resin has a relatively low elastic modulus and can reduce the stress acting on the glass member to be sealed, and has a difference in thermal expansion coefficient. can do.
- the curable silicone resin is composed of a bifunctional silicon monomer (R Si—X) and a trifunctional silicon monomer.
- the curable silicone resin is a copolymer obtained by partially hydrolyzing and co-condensing these monomers, and has a silanol group generated by hydrolysis of X.
- This curable silicone resin can be further condensed (curable) by its silanol group, and finally becomes a cured product having substantially no silanol group by curing.
- the cured product consists of a bifunctional silicon unit (RSiO) and a trifunctional silicon unit (RSiO).
- Each silicon unit in the curable silicone resin is formed by hydrolyzing X together with each silicon unit in the cured product, and is a silanol that contributes to the curability of the silicone resin. It also means each silicon unit containing a group.
- a bifunctional silicon unit having a silanol group is represented by (R Si (OH)-)
- a trifunctional silicon unit having a silanol group is represented by (RSi (0
- the molar ratio of the elemental unit is equal to the molar ratio of each silicon monomer as the raw material.
- R is preferably an alkyl group having 14 to 14 carbon atoms or a monovalent aromatic hydrocarbon having 6 to 12 carbon atoms, More preferably, it is a methyl group, an ethyl group or a phenyl group.
- X is a hydroxyl group or a hydrolyzable group such as an alkoxy group and a chlorine atom. In the curable methyl silicone resin of the present invention, X is preferably a hydroxyl group.
- the methylphenol silicone resin in the present invention preferably has a Si-OZSi-R value of 11.0-15.2, as determined from FT-IR. That is, the peak area of Si—O (peaks appearing in the range of 1250—950 cm— 1 ) (a) and the peak area derived from methyl groups (peaks appearing in the range of 1330—1250 cm— 1 ) (b) And the product of the peak area derived from the methyl group (b) and the number of moles of the phenyl group determined from H-NMR and the value of the number of moles of the methyl group (c). That is, the methylphenol silicone resin of the present invention preferably satisfies the following formula.
- the heat resistance decreases as the alkyl group bonded to Si of the curable silicone resin becomes longer in chain.
- An aromatic hydrocarbon group represented by a phenyl group has mechanical heat resistance equal to or higher than that of a methyl group, which is the shortest alkyl group.
- the resin film becomes harder. Takes on thermoplasticity. Therefore, the mechanical strength of the resin such as heat resistance and bendability can be adjusted by the ratio of the number of filler groups to the total number of R in the resin.
- a methylphenyl silicone resin in the present invention a methylphenylsilicone resin having a molar ratio of phenyl group / methyl group of 0.1 to 1.2 is preferable. The molar ratio is more preferably from 0.3 to 0.9 in terms of being superior to the above characteristics!
- the methylphenyl silicone in which the ratio of the number of fur groups to the total number of R in the resin is 0.1-0.5, more preferably 0.2-0.5.
- Fat is preferred [0028]
- the peak height (3074 cm) derived from a phenolic group derived from FT-IR (3074 cm) and the peak height (2996 cm- 1 ) derived from a Z methyl group are 0.1-1.2. Fats are also preferred.
- the curable silicone resin as a raw material of the spacer composition is a curable methylphenylsilicone resin (a bifunctional silicone unit and a trifunctional silicone unit). It is a methylphenylsilicone resin having a molar ratio of bifunctional silicon units to the total of elementary units (also simply referred to as the molar ratio of bifunctional silicon units) of 0.05 to 0.55.
- This methylphenol silicone resin is a curable silicone resin containing both a methyl group and a phenyl group as the organic group R.
- the methylphenol silicone resin is produced by, for example, a method of hydrolytic cocondensation of dichlorodimethylsilane and trichloromethylphenylsilane, a method of hydrolytic cocondensation of dichlorodiphenylsilane and trichloromethylsilane, and the like.
- the molar ratio of the bifunctional silicon units of the methylphenyl silicone resin in the present invention is more preferably 0.2-0.4. Further, it is preferable that the methylphenol silicone resin has substantially only bifunctional and trifunctional silicone units.
- the methylphenyl silicone resin according to the present invention is excellent in heat resistance without easily decomposing and discoloring even when kept at a high temperature of 250 ° C. or more for a long time.
- the methylphenol silicone resin of the present invention includes curable dialkyl silicone resins such as dimethyl silicone resin, and curable alkylphenyl silicone resins other than methylphenyl silicone resin such as ethylphenol silicone resin. ⁇
- the physical properties can be adjusted by adding a small amount of fat. Normally, it is preferable not to use these curable silicone resins other than methylphenyl silicone resin.
- methylphenylsilicone resin can be used after being modified with epoxy resin, phenol resin, alkyd resin, polyester resin, atalyl resin and the like. However, it is preferable that the amount of denatured resin is small, and the methylphenyl silicone resin in the present invention is substantially modified! ⁇ , Methylfile silicone resin is preferred! /.
- Methylphenol silicone resin is usually handled as a solution (varnish) dissolved in a solvent, such as transport and storage.
- the spacer composition used in the present invention uses this varnish, It can be manufactured by mixing this with a refractory filler.
- the spacer composition used in the present invention containing this solvent becomes a liquid mixture or a solid mixture having fluidity.
- the solvent-free methylphenyl silicone resin and the refractory filler may be mixed to obtain the spacer composition used in the present invention.
- the solvent can be removed to obtain the composition for a spacer used in the present invention.
- the solvent used for varnishing the methylphenol silicone resin is not particularly limited, and any solvent may be used as long as it dissolves the methylphenol silicone resin.
- aromatic hydrocarbon solvents xylene, toluene, benzene, solvents having a boiling point of 100 ° C or lower, methyl ethyl ketone, ethyl acetate, isopropyl acetate, getyl ether, dipropyl ether, tetrahydrofuran, acetonitrile, propio Nitril, 1-propanol, 2-propanol, aryl alcohol and the like can be used.
- the composition for a spacer is applied and then heated to volatilize and remove the solvent.
- the latter is more preferred because it is easier.
- the amount of solvent used in the varnish is preferably 5-50% by weight. If the content is less than 5% by mass, the dissolving effect of the methylphenol silicone resin is insufficient, and it is likely to be difficult to mix homogeneously with the refractory filler. If the content exceeds 50% by mass, when the solvent is mixed with the refractory filler, the solvent causes phase separation with the refractory filler, and immediately after mixing the refractory filler, a large amount of energy is required to remove the solvent.
- the methylphenol silicone resin must be present as a partially polymerized methylphenol silicone resin (also simply referred to as a partially polymerized methylphenol silicone resin) in the spacer composition.
- a partially polymerized methylphenol silicone resin also simply referred to as a partially polymerized methylphenol silicone resin
- Partially polymerized methylphenol silicone resin is used as a raw material Therefore, compared to the raw material methyl-phenyl silicone resin, the generation of water when cured to form a spacer is less, and therefore the spacer containing partially polymerized methylphenyl silicone resin is not used.
- the composition for use is cured to form a spacer, the risk of generation of bubbles is reduced as compared with the raw material methylphenol silicone resin, and the airtightness can be improved.
- the partially polymerized methylphenylsilicone resin is used as the raw material methylphenylsilicone. It is a high-viscosity liquid and a high-melt-viscosity solid as compared with the natural resin, and has properties suitable for forming the spacer composition used in the present invention into a molded article. For example, when a molded product of the spacer composition disposed at a predetermined portion of the sealing plate is cured to form a spacer, the methylphenyl silicone resin may flow and protrude from the predetermined portion. Are few and gone.
- the partially polymerized methylphenol silicone resin is a curable methylphenol silicone resin in which the raw material methylphenylsilicone resin is partially cured.
- the methylphenyl silicone resin in the present invention means methylphenyl silicone resin which is a raw material of partially polymerized methylphenol silicone resin, and also means this partially polymerized methylphenol silicone resin.
- a partially polymerized methylphenylsilicone resin in the step of producing the composition for a spacer used in the present invention is referred to as a partially polymerized methylphenylsilicone resin.
- Partial polymerization of the methylphenol silicone resin is usually performed by stopping the curing reaction of the raw methylphenol silicone resin by heating so that the curing reaction is not completely completed.
- the raw material methylphenylsilicone resin can be obtained by partially curing the raw material methylphenylsilicone resin by a method such as heating at a lower temperature than in the case of a normal curing reaction, or heating for a shorter time than required for normal curing.
- the partial polymerization of the raw material methylphenyl silicone resin can be carried out in the composition in which the refractory filler is present or in the course of the production of the composition.
- the curing of methylphenol silicone resin by dehydration condensation usually proceeds only by heating, and the dehydration condensation reaction between silanol groups of the resin and the silanol group of the resin and silanol on one surface of the refractory filler.
- a cured product insoluble in a solvent is formed by the dehydration-condensation reaction of the group.
- the spacer composition applied to a desired position on the substrate or the sealing plate is heated at a temperature of 140 ° C. or more, preferably 180 ° C. to 300 ° C., for only 1 to 120 minutes.
- the resin hardens and becomes insoluble and becomes a spacer used in the present invention.
- a solvent when contained in the spacer composition, it is volatilized and removed at the beginning of heating, and when a non-heat-resistant substance such as an organic substance is present, it is volatilized or decomposed and removed at the time of curing.
- a curing catalyst may be used to lower the curing temperature of methylphenol silicone resin.
- the catalyst include organic metal salts such as zinc, cobalt, tin, iron, and zirconium; quaternary ammonium salts; chelates such as aluminum and titanium; and various amines and salts thereof.
- the refractory filler used in the present invention is preferably a heat-resistant inorganic powder.
- Specific examples include silica, alumina, mullite, zircon, cordierite, j8-eucryptite, ⁇ -spodumene,
- the average particle size of the refractory filler is preferably 0.1 to 130 ⁇ m, 0.1 to 90 ⁇ m is more preferable, and 0.1 to 20 m is more preferable 0.1 to 130 ⁇ m. 10 m is particularly preferred. If the average particle size exceeds the above upper limit, after curing of the methylphenyl silicone resin, cracks occur at the interface between the refractory filler and the silicone resin, and air containing moisture enters the internal space of the organic EL element. Or the like may invade and the dried state of the internal space may not be maintained. If the average particle size is less than the above lower limit, the powder will agglomerate and will not be uniformly dispersed in the curable methylphenyl silicone resin. In addition, there is a problem that the amount of the refractory filler is limited due to the increase in viscosity.
- the refractory filler is preferably silica, particularly spherical silica.
- the average particle size of the spherical silica is preferably 0.1 to 130 m, more preferably 0.1 to 90 m, more preferably 0.1 to 20 m, and still more preferably 0.1 to 20 m. — More preferably 10 m.
- the average particle size of the spherical silica is 0.1 to 20 m, a composition for a spacer having good coating workability can be obtained.
- the average particle size is less than the above range, the particles are aggregated and the dispersibility is reduced, and a uniform composition is not obtained. If the average particle size is more than the above range, the particles are precipitated and the dispersibility becomes poor, Again, a uniform composition cannot be obtained. In addition, there is a problem in that the amount of the refractory filler compounded is limited due to the increase in viscosity.
- the amount of the refractory filler in the spacer composition used in the present invention is 10 to 80% by mass based on the total amount of the methylphenol silicone resin and the refractory filler. When the amount is less than 10% by mass, sufficient heat resistance is not exhibited, and it is difficult to secure a spacer having a thickness of several tens m or more necessary for sealing. Over 80% by mass Air has poor dispersibility and affinity with methylphenylmethylphenylsilicone resin, resulting in cracks in the spacer (cured product) and air containing moisture into the internal space of the organic EL device. And the like cannot enter and the dried state of the internal space cannot be maintained. In addition, the adhesive strength to the sealing site decreases.
- the preferred amount of refractory filler is 30-70% by weight.
- the compounding amount of the spherical silica in the spacer composition is the sum of methylphenyl silicone resin and refractory filler. 10-80% by mass, and preferably 30-70% by mass. If it is less than this range, heat resistance and light resistance will be inferior. If it exceeds this range, cracks will occur in the spacer, and air containing moisture will enter the internal space of the organic EL element, and It is not possible to maintain a dry state during the period. In addition, the adhesive strength at the sealing site is reduced.
- the composition for a spacer used in the present invention has a spherical shape having a large particle size (more than 130m) and a narrow particle size distribution. It is preferable to mix a small amount of the particles in order to make the thickness of the spacer easy to obtain. Hereinafter, this particle size is large! /
- the filler is also called the second filler.
- a spherical refractory filler having a particle size larger than the particle diameter of the refractory filler is preferable.
- spherical silica having a particle diameter of 300 to 500 ⁇ m, such as barium titanate is preferred.
- the blending amount of the second filler is preferably 0.1 to 15% by mass with respect to the total of the methyl-silicone resin and the refractory filler (however, not more than 50% by mass based on the total refractory filler).
- Magmas is particularly preferred at 115% by mass.
- the spacer composition used in the present invention may contain components other than the methylphenyl silicone resin and the refractory filler. Such other components are, for example, components other than the components finally functioning as a spacer, such as the above-mentioned solvent, or components remaining in the spacer, for example, spacer color pigments. .
- the content of these components in the spacer composition is not particularly limited, but is an amount that does not inhibit the properties of the spacer composition used in the present invention and the spacer obtained therefrom.
- the former component, excluding the solvent, is preferably 20% by mass or less based on the spacer composition.
- the amount of the solvent depends on the method of using the composition for the spacer, such as using the composition in a liquid form, using the composition in a solid state, and the like. Forces that are optional depending on the composition for the spacer, usually 50% by weight or less are preferred.
- the other components and their preferable amounts include the following. 5% by mass or less of an amine-based curing agent or the like for accelerating the curing of the above methylphenyl silicone resin;
- the pineapple 5% by mass or less of a tackifier such as rosin, rosin and rosin derivative.
- the silane coupling agent is used in an amount of 1 to 30 with respect to the total amount of the spacer composition and the silane coupling agent. %, Preferably 1 to 20% by mass, more preferably 5 to 10% by mass.
- the silane coupling agent is not particularly limited, and examples thereof include an epoxy group and an amino group.
- At least one organic functional group selected from the group consisting of A silane coupling agent may be used.
- the spacer composition used in the present invention is obtained by mixing the above-mentioned methylphenyl silicone resin with a refractory filler to form a uniform composition.
- a solution (varnish) of methylphenyl silicone resin a composition containing methylphenyl silicone resin, a solvent, and a refractory filler may be used.
- the solvent is volatilized and removed to obtain a solid composition substantially containing no solvent.
- the temperature at which the solvent is volatilized and removed is 100 to 180 ° C, preferably 100 to 140 ° C, depending on the type of the solvent used.
- the spacer composition of the present invention is preferably used in the form of a paste containing a solvent, preferably containing 10 to 30% by mass of the solvent, because of excellent handling properties.
- the shape is not particularly limited, and may be formed into a shape such as a sheet shape, a wire shape, a stick shape, or the like.
- Methylphenylsilicone resin is partially added when producing the above spacer composition.
- Into a partially polymerized methylphenol silicone resin The partial polymerization of the methylphenylsilicone resin may be performed before mixing the refractory filler or may be performed after mixing the refractory filler.
- a varnish When a varnish is used, it may be performed in the presence of a solvent or after removing the solvent.
- the varnish and the refractory filler are heated and mixed with stirring to remove the solvent in that state, and then the temperature is further raised in that state to further increase the methylphenyl silicone resin. It is preferred to carry out partial polymerization.
- Partial polymerization of methyl phenyl silicone resin stops the reaction before the curing reaction has completely progressed. Therefore, the viscosity of the composition containing methyl phenyl silicone resin is set at 120-180 ° C while the viscosity of the composition containing methyl phenyl silicone resin is used as a guide. Perform at temperature. When performing partial polymerization at 180 ° C, for example, heating may be stopped when the viscosity of the composition reaches 5000 cP-60, OOOcP. It is to be noted that the partial polymerization is preferably carried out at a temperature of 120 to 140 ° C., since the reaction is easily stopped based on the viscosity at which the curing reaction is relatively slow, as a guide.
- the spacer composition used in the present invention containing the partially polymerized methylphenol silicone resin is preferably a molded article formed into a sheet, wire, stick, or the like.
- a spacer composition obtained by heating as described above to obtain a partially polymerized methylphenol silicone resin becomes a clay-like composition, and this heated clay-like composition is poured into a mold and molded. can do.
- it can be molded into various desired shapes such as a sheet, a wire, and a stick using a mold made of fluorine resin or the like.
- the obtained molded article of the spacer composition in the shape of a sheet, wire, stick, or the like can be applied to the sealing of an object to be sealed as it is.
- the spacer composition used in the present invention containing the partially polymerized methylphenol silicone resin is easy to handle even when used in the form of a paste dissolved in the above-mentioned suitable solvent. It is rather preferable because it is excellent.
- the amount of the solvent is as described above.
- FIG. 1 is a schematic sectional view showing one configuration example of the organic EL device of the present invention.
- an organic EL device 1 includes an organic EL structure 3 formed on a substrate 2 and an organic EL structure 3. And a sealing plate 4 arranged at a predetermined interval so as to cover the body 3. Further, in order to hold the substrate 2 and the sealing plate 4 at a predetermined interval, a spacer 6 is sandwiched between them. The joining surface between the substrate 2 and the spacer 6 is joined via an adhesive 5.
- the substrate used in the present invention in the case of a configuration in which light emitted from the substrate side is extracted, a light-transmitting property is required. It is usually made of glass, for example, glass such as soda-lime glass, borosilicate glass, silica glass, and alkali-free glass, and may be made of transparent or translucent resin. In the case of soda-lime glass (soda-lime glass), a so-called white plate is preferable because of its excellent light transmittance. In the case of reverse lamination, the substrate may be transparent or opaque or may be opaque, and ceramics or the like may be used.
- the emission color may be controlled by using a color filter film, a color conversion film containing a fluorescent substance, or a dielectric reflection film on the substrate.
- a color filter used in a liquid crystal display or the like can be used. If the characteristics of the color filter are adjusted according to the light emitted from the organic EL element, the extraction efficiency and the color purity can be optimized. Good.
- a color filter capable of cutting off short-wavelength external light that is absorbed by the organic EL element material or the fluorescence conversion layer is used, the light resistance of the element and the display contrast are improved.
- an optical thin film such as a dielectric multilayer film may be used instead of the color filter.
- the fluorescence conversion filter film absorbs EL light and emits phosphor light in the fluorescence conversion film to perform color conversion of the emission color. , Formed from three light absorbing materials.
- the fluorescent material it is basically desirable to use a material having a high fluorescence quantum yield and to have a strong absorption in an EL emission wavelength region.
- laser dyes are suitable, and rhodamine compounds, perylene compounds, cyanine compounds, phthalocyanine compounds (including subphthalocyanines), naphthalimide compounds, condensed ring hydrocarbon compounds, condensed heterocyclic compounds Cyclic compounds' styryl compounds ⁇ Coumarin compounds and the like may be used. It is preferable to use a material that can be finely patterned by photolithography, printing, or the like, by selecting a material that does not quench the fluorescence. Further, a material that does not suffer damage during the film formation of ⁇ and ⁇ is preferred.
- the light absorbing material is used when the light absorption of the fluorescent material is insufficient, but may not be used when unnecessary.
- a material that does not extinguish the fluorescence of the fluorescent material may be selected.
- the organic EL structure used in the present invention includes a hole injection electrode, and an organic layer composed of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, or a mixture thereof. , And an electron injection electrode, which can take various forms as necessary. That is, the electron transport layer may be omitted, or the hole injection layer and the hole transport layer may be used as a hole injection / transport layer.
- a conventionally known material can be used as a material for the organic EL structure used in the present invention. Specifically, for example, materials described in “Organic EL Materials and Display Devices” (published by CMC Corporation) and JP-A-2003-317934 can be used.
- the heat treatment temperature with respect to the glass transition temperature Tg of each of the organic materials constituting these organic layers was set at 20 ° C. to the lowest glass transition temperature Tg among the glass transition temperatures Tg of the respective constituent materials. It is preferable that the temperature does not exceed the temperature, and is the lowest temperature of the parentheses, and not lower than the temperature obtained by subtracting 20 ° C. from the glass transition temperature Tg. More preferably, the temperature is in the range of the lowest temperature, the glass transition temperature force is higher by 20 ° C. and the temperature.
- the glass transition temperature of these materials may be used as a reference.
- the time of the heat treatment depends on the temperature for forming and processing the organic layer, but is preferably in the range of 10 minutes to 24 hours, more preferably 20 minutes to 20 hours, and particularly preferably 30 minutes to 12 hours.
- the light emitting layer has a function of injecting holes (holes) and electrons, a function of transporting them, and a function of generating excitons by recombination of holes and electrons.
- the emission layer is relatively electronically U, which prefers to use eutral compounds.
- the light emitting layer of the organic EL device of the present invention contains a fluorescent substance which is a compound having a light emitting function.
- a fluorescent substance include compounds disclosed in JP-A-63-264692, for example, at least one selected from compounds such as quinacridone, rubrene, and styryl dyes.
- quinolin derivatives such as metal complex dyes having 8-quinolinol or its derivatives as ligands, such as tris (8-quinolinolato) aluminum, tetraphenylbutadiene, anthracene, perylene, coronene, 12-phthalopeninone Derivatives and the like.
- the content of the compound in the light emitting layer in such a case 0. 01 10 volume 0/0, more preferably a 0.5 1 5 vol%.
- the emission wavelength characteristics of the host material can be changed, light emission shifted to longer wavelengths is possible, and the luminous efficiency and stability of the device are improved.
- these fluorescent substances are used as dopants and the content is 5% by volume or less, it is not necessary to consider the glass transition temperature Tg of the fluorescent substances during the heat treatment.
- a quinolinolato complex is preferable, and further, an aluminum complex having 8-quinolinol or a derivative thereof as a ligand is preferable.
- Such aluminum complexes are disclosed in JP-A-63-264692, JP-A-3-255190, JP-A-5-70733, JP-A-5-258859, JP-A-6-215874 and the like. Things can be mentioned.
- an aluminum complex having another ligand may be used.
- a complex examples include bis (2-methyl-8-quinolinolate) (phenolate) aluminum (111) , Bis (2-methyl-8-quinolinolato) (altocorrezolato) aluminum (III), bis (2-methyl-8-quinolinolato) (meth-cresolato) aluminum (111), bis (2-methyl-8-quinolinolato) (para-taresolato) )
- Aluminum (III) bis (2-methyl-8-quinolinolato) (autotofu-lenolate) aluminum (111), bis (2-methyl-8-quinolinolato) (meta-fu- crizolato) aluminum (111), bis (2 —Methyl-8-quinolinolato) (para-phenylenolate) aluminum ( ⁇ ), bis (2-methyl 8-quinolinolato) (2, 3- Methylphenolato) aluminum (111), bis (2-methyl
- These other host substances include phenylanthracene derivatives described in JP-A-8-12600 (Japanese Patent Application No. 6-110569) and JP-A-8-12969 (Japanese Patent Application No. 6-110569). No. 114456) are also preferred.
- the glass transition temperature Tg of these substances is about 60-150 ° C, and preferably about 90-130 ° C! /.
- the light emitting layer may also serve as an electron injection / transport layer.
- the glass transition temperature Tg of these substances is about 60 to 150 ° C, preferably about 90 to 130 ° C.
- the glass transition temperature Tg of tris (8-quinolinolato) aluminum is unknown, it is stable up to about 100 ° C (hereinafter the same applies to tris (8-quinolinolato) aluminum).
- the light-emitting layer may be a mixed layer of at least one or more kinds of hole injecting and transporting compounds and at least one or more kinds of electron injecting and transporting compounds. It is preferable that a dopant be contained in the mixed layer.
- the content of the compound in such a mixed layer is preferably 0.01 to 20% by volume, more preferably 0.1 to 15% by volume.
- the mixed layer a hopping conduction path of carriers is formed, so that each carrier moves in a substance that is predominantly polar, injection of a carrier having the opposite polarity is unlikely to occur, and an organic compound is not used.
- This is advantageous in that the element is hardly affected by the image and the life of the element is extended.
- the emission wavelength characteristics of the mixed layer itself can be changed, the emission wavelength can be shifted to a longer wavelength, and the emission intensity can be increased. And the stability of the device can be improved.
- the hole injecting and transporting compound and the electron injecting and transporting compound used in the mixed layer are each selected from the following compounds for the hole injecting and transporting layer and the compounds for the electron injecting and transporting layer. do it.
- the compound for the hole injection / transport layer it is preferable to use an amine derivative having strong fluorescence, for example, a triphenyldiamine derivative which is a hole transport material, a styrylamine derivative, or an amine derivative having an aromatic condensed ring. I like it.
- the glass transition temperature Tg of these substances is about 60 to 150 ° C, preferably about 90 to 130 ° C! /.
- a quinoline derivative As the compound capable of injecting and transporting electrons, it is preferable to use a quinoline derivative, furthermore, a metal complex having 8-quinolinol or a derivative thereof as a ligand, in particular, tris (8-quinolinolato) aluminum (Alq3). It is also preferable to use the above-mentioned phenylanthracene derivatives and tetraarylethene derivatives.
- the glass transition temperature Tg of these substances is about 60 to 150 ° C, preferably about 90 to 130 ° C.
- an amine derivative having strong fluorescence for example, the above-mentioned hole transporting material such as a triphenyldiamine derivative, a styrylamine derivative, and an amine derivative having an aromatic condensed ring are used. Is preferred.
- the glass transition temperature Tg of these substances is about 60 to 150 ° C, preferably about 90 to 130 ° C.
- the mixing ratio is determined by considering the respective carrier mobilities and carrier concentrations.
- the compound of the hole injecting and transporting compound Z is the weight of the compound having the electron injecting and transporting function.
- the specific force is preferably 1 / 99-99 / 1, and more preferably 10Z90-90ZlO, especially about 20 ⁇ 80-80 ⁇ 20.
- the thickness of the mixed layer is preferably less than the thickness of the organic compound layer, more preferably from 18.5 nm, to the thickness corresponding to one molecular layer. Further, the thickness is preferably 5 to 60 nm, particularly preferably 5 to 50 nm.
- a method for forming a mixed layer co-evaporation in which evaporation is performed from different evaporation sources is preferable. When the force and vapor pressure (evaporation temperature) are approximately the same or very close, they are mixed in advance in the same evaporation board. Alternatively, it can be deposited. In the mixed layer, it is preferable that the compounds are uniformly mixed with each other, but in some cases, the compounds may be present in an island shape. In general, the light-emitting layer is formed to a predetermined thickness by vapor-depositing an organic fluorescent substance or by dispersing and coating the resin in a resin binder.
- the hole injection / transport layer has a function of facilitating injection of holes from the positive electrode, a function of stably transporting holes, and a function of hindering electrons. These layers have the function of facilitating the injection of electrons, the function of stably transporting electrons, and the function of hindering holes. These layers increase the amount of holes and electrons injected into the light emitting layer. To optimize luminous efficiency.
- the hole injecting and transporting layer includes, for example, JP-A-63-295695, JP-A-2-191694, JP-A-3-792, JP-A-5-234681, and JP-A-5-234681.
- Various organic compounds described in 239455, JP-A-5-299174, JP-A-7-126225, JP-A-7-126226, JP-A-8-100172, EP0650955A1, etc. can be used. it can.
- tetraaryl benzene disulfide compound triaryl diamine or triphenyl diamine: TPD
- aromatic tertiary amine hydrazone derivative
- thiolazole derivative triazole derivative
- imidazole derivative oxaziazole derivative having amino group
- polythiophene examples include polyaline derivatives, phthalocyanines, a-NPDs represented by the following formula, and triphenylamine tetramer (TPTE).
- TPTE triphenylamine tetramer
- the hole injection / transport layer is formed separately as a hole injection layer and a hole transport layer
- a neutral combination of compounds for the hole injection / transport layer can be selected and used.
- the layers of the conjugated compound having the smaller ionization potential are stacked in order from the positive electrode (ITO or the like) side. Further, it is preferable to use a compound having a good thin film property on the surface of the positive electrode.
- Such a stacking order is the same when two or more hole injection / transport layers are provided.
- the drive voltage is reduced, and the occurrence of current leakage and the occurrence and growth of dark spots can be prevented.
- thin films of about 11 lOnm can be made uniform and pinhole-free because evaporation is used, so that the hole injection layer absorbs light in the visible region where the ionization potential is small. Even if such a compound is used, it is possible to prevent a decrease in efficiency due to a change in the color tone of the emission color or reabsorption.
- the hole injecting / transporting layer can be formed by vapor deposition of the above compound in the same manner as the light emitting layer and the like.
- the electron injection / transport layer may include an organometallic complex having a derivative thereof such as 8-quinolinol such as tris (8-quinolinolato) aluminum (Alq3) as a ligand.
- Derivatives such as quinoline derivatives, oxadiazole derivatives, perylene derivatives, pyridine derivatives, pyrimidin derivatives, quinoxaline derivatives, diphenylquinone derivatives, nitro-substituted fluorene derivatives, distyryl biphenyl derivatives (DPVBi), benzoxazole thiophene derivatives, thiazole derivatives, etc.
- the electron injection / transport layer may also serve as the light emitting layer.
- the electron injecting and transporting layer may be formed by vapor deposition or the like, similarly to the light emitting layer.
- the glass transition temperature Tg of these substances is about 60 to 150 ° C, and preferably about 90 to 130 ° C.
- a preferable combination can be selected from the compounds for the electron injecting and transporting layer. At this time, it is preferable to stack the compounds having the higher electron affinity values in the order of the electron injection electrode side force. This stacking order is the same when two or more electron injection / transport layers are provided.
- Examples of the material of the electron injection layer include alkali metal fluorides represented by lithium fluoride (Appl. Phys. Lett., 70, 152 (1997)), fluorides of alkaline earth metals, and the like. Examples include oxides such as magnesium oxide, strontium oxide, aluminum oxide, and barium oxide.
- the thickness of the electron injection layer is preferably set to 5 nm or less, preferably 2 nm or less, because it is considered that tunnel injection of electrons from the electron injection electrode is possible. preferable. In the case of a non-insulator, the effect is impaired below 100 nm, and is preferably within the range.
- a vacuum deposition method In forming organic layers such as the light emitting layer, the hole injecting and transporting layer, and the electron injecting and transporting layer, it is preferable to use a vacuum deposition method because a uniform thin film can be formed.
- a vacuum deposition method When a vacuum deposition method is used, a homogeneous thin film having an amorphous state or a crystal grain size of 0: m or less can be obtained. If the crystal grain size exceeds 0.1 m, non-uniform light emission will occur, and the driving voltage of the device must be increased, and the charge injection efficiency will be significantly reduced.
- Conditions of the vacuum deposition is not particularly limited Do, but the degree of vacuum of 10- 4 Pa, the deposition rate 0. 01 is preferably about InmZsec. Further, it is preferable to form each layer continuously in a vacuum. If they are formed continuously in a vacuum, high characteristics can be obtained because impurities can be prevented from adsorbing at the interface between the layers. In addition, the driving voltage of the device can be reduced, and the growth and generation of dark spots can be suppressed.
- each boat containing the compounds When a plurality of compounds are contained in one layer when a vacuum evaporation method is used to form each of these layers, it is preferable to individually co-deposit each boat containing the compounds by controlling the temperature.
- the thickness of the light emitting layer, the thickness of the hole injecting and transporting layer, and the thickness of the electron injecting and transporting layer are not particularly limited, and the force varies depending on the forming method.
- the force is usually about 5 to 500 nm, particularly 10 to 300 nm. Is preferred.
- the thickness of the hole injecting and transporting layer and the thickness of the electron injecting and transporting layer depend on the design of the recombination 'light emitting region, but may be about the same as the thickness of the light emitting layer or about 1Z10 to 10 times.
- the injection layer and the transport layer for holes or electrons are separated from each other, it is preferable that the injection layer is lnm or more and the transport layer is lnm or more.
- the upper limit of the thickness of the injection layer and the transport layer is usually about 500 nm for the injection layer and about 500 nm for the transport layer. Such a film thickness is the same when two injection / transport layers are provided.
- the hole injection electrode is usually formed as an electrode on the substrate side, and is configured to extract emitted light. Therefore, a transparent or translucent electrode is preferable.
- Transparent electrodes include ITO (tin-doped indium oxide), IZO (zinc-doped indium oxide), ZnO, SnO, InO, etc.
- ITO and IZO are preferable.
- ITO usually studies In O and SnO
- the amount of force contained in the stoichiometric composition is slightly deviated from this.
- the thickness of the hole injection electrode only needs to be a certain thickness or more that allows sufficient hole injection, and is preferably in the range of 10 to 500 nm, more preferably 30 to 300 nm.
- the upper limit is not particularly limited, but if the thickness is too large, problems such as peeling, deterioration in workability, damage due to stress, reduction in light transmittance, and leakage due to surface roughness may occur. On the other hand, if the thickness is too small, there are problems in the film strength at the time of production, the hole transport ability, and the resistance value.
- the hole injecting electrode layer can be formed by a vapor deposition method or the like, and is preferably formed by a sputtering method.
- a barrier layer such as an SiO film is provided on the substrate for the purpose of preventing intrusion of moisture from the substrate side.
- the thickness of the barrier layer is preferably 10-100 nm, more preferably 15-20 nm.
- the electrode on the light extraction side has an emission wavelength band, usually 400 to 700 nm, and particularly has a light transmittance of 50% or more, more preferably 60% or more, particularly 80% or more, and even 90% for each emitted light. It is preferable that it is above.
- the transmittance When the transmittance is low, the light emission itself from the light emitting layer is attenuated, and it becomes difficult to obtain the luminance required for the light emitting element. In some cases, the transmittance may be relatively low for the purpose of improving the visibility by improving the contrast ratio or the like.
- the electron injection electrode a material having a low work function is preferable.
- K Li, Na, Mg, La, Ce, Ca, Sr, Ba, Al, Ag, In, Sn, Zn, Zr, etc.
- alloys for example, Ag'Mg (Ag: l-20at%), Al'Li (Li: 0.3-14at%), ⁇ g (Mg: 50-80at%), AlCa ( Ca: 5-20at%) is preferred.
- the electron injection electrode can be formed by a vapor deposition method ⁇ ⁇ a sputtering method.
- These oxides may be formed in combination with an auxiliary electrode for the purpose of facilitating charge transfer.
- the thickness of the auxiliary electrode is preferably 0.1—lOnm, and more preferably 0.1—5.
- the thickness of the electron injecting electrode thin film may be a certain thickness or more capable of sufficiently injecting electrons, and may be 0.1 nm or more, preferably 1 nm or more. Although the upper limit is not particularly limited, the film thickness may be generally set to about 11 to 500 nm.
- a protective electrode may be further provided on the electron injection electrode.
- the thickness of the protective electrode is preferably a certain thickness or more, preferably 50 nm or more, more preferably 100 nm or more, in order to secure electron injection efficiency and prevent entry of moisture, oxygen, or an organic solvent. In particular, the range of 100 to 100 Onm is preferable. If the protective electrode layer is too thin, the effect cannot be obtained, and the step coverage of the protective electrode layer is reduced, and the connection with the terminal electrode is not sufficient. On the other hand, if the protective electrode layer is too thick, the stress of the protective electrode layer will increase, and the growth rate of dark spots will increase.
- the total thickness of the electron injecting electrode and the protective electrode is not particularly limited, but may be generally about 100-lOOOnm.
- an inorganic material such as SiO, Teflon R
- a protective film using an organic material such as a fluorocarbon polymer containing X and chlorine may be formed.
- the protective film may be transparent or opaque, and the thickness of the protective film should be about 50 to 1200 nm.
- the protective film may be formed by a general sputtering method, an evaporation method, a PECVD method, or the like, in addition to the reactive sputtering method described above.
- the sealing plate used in the present invention may have a concave portion, but is preferably a flat plate because it is easy to manufacture and inexpensive.
- the material for the sealing plate examples include transparent or translucent materials such as glass, quartz, and resin. However, glass is particularly preferred. By using a glass flat plate, an inexpensive and thin organic EL display device can be obtained. As such a glass material, alkali glass is preferable in terms of cost, but other glass materials such as soda-lime glass, lead-alkali glass, borosilicate glass, aluminosilicate glass, silica glass, and alkali-free glass are also used. Is also preferred. In particular, soda glass, a glass material having no surface treatment, can be used at low cost and is preferable. As the sealing plate, a metal plate, a plastic plate, or the like can be used in addition to the glass plate.
- the size of the sealing plate is not particularly limited, and is appropriately adjusted to a suitable size depending on a design of a display portion, a circuit design, and the like.
- the thickness of a flat plate is usually about 0.1 to 5 mm.
- thermosetting adhesive can be used, but a photocurable adhesive is preferable in consideration of the influence on the organic EL structure.
- various adhesives such as ester acrylates, urethane acrylates, epoxy acrylates, melamine acrylates, acrylamide acrylates, and radical adhesives using resins such as urethane polyester, epoxy, Cationic adhesives using a resin such as butyl ether, thiol-added resin adhesives, etc., among which there is no inhibition by oxygen Cationic adhesives that undergo a polymerization reaction even after irradiation with light Is preferred.
- a cationically curable ultraviolet curable epoxy resin adhesive is preferable.
- the glass transition temperature of each layer constituting material of the above-mentioned organic EL structure is 140 ° C or less, particularly about 80-100 ° C.
- the curing temperature is 140-180 °. Since it is about C, there is a problem that the organic EL structure is softened at the time of curing and the characteristics are deteriorated.
- an ultraviolet-curable adhesive such a problem as softening of the organic EL structure does not occur, but an ultraviolet-curable adhesive generally used at present is an acrylic type adhesive.
- an ultraviolet-curable epoxy resin adhesive is commercially available as an ultraviolet-curable epoxy resin adhesive, and in some cases, an epoxy resin adhesive that is used in combination with ultraviolet heat curing is included. In many cases, a radical-curable acrylic resin and a heat-curable epoxy resin are mixed or modified. The problem of the curing temperature has not been solved, and it is not preferable as an adhesive used for the organic EL device of the present invention.
- the cationic curing type ultraviolet curing epoxy resin adhesive contains a Lewis acid salt type curing agent which releases a Lewis acid catalyst by photolysis by irradiation with light such as ultraviolet rays as a main curing agent, and is generated by light irradiation.
- This type of adhesive is an epoxy resin whose main component is an epoxy resin that is polymerized by a cationic polymerization type reaction mechanism using the obtained Lewis acid as a catalyst.
- Examples of the epoxy resin as a main component of the adhesive include epoxy resin, alicyclic epoxy resin, and novolak epoxy resin.
- Examples of the curing agent include a Lewis acid salt of an aromatic diazonium, a Lewis acid salt of diarylodonium, a Lewis acid salt of triarylsulfonium, and a Lewis acid salt of triarylselenium. Is mentioned. Of these, the diarylodonium Lewis acid salt is preferred.
- the adhesive has a lower moisture permeability than the spacer, the distance between the substrate and the sealing plate is preferably adjusted by the thickness of the spacer. Therefore, the thickness of the adhesive layer is preferably as thin as possible as long as sufficient adhesive strength can be ensured. It is usually about 5 to 100 m, preferably about 10 to 80 ⁇ m.
- the method for producing an organic EL device of the present invention is not particularly limited.
- the spacer composition is applied to one surface of a sealing plate and heated and cured to form a spacer.
- the method further comprises a third step of bringing the substrate having the body formed into close contact therewith, and irradiating the adhesive with ultraviolet rays to cure the adhesive.
- conditions such as temperature and heating time are not particularly limited.
- the above-mentioned spacer composition is applied to the periphery of one surface of the sealing plate, and heated at 70 to 120 ° C for 30 to 60 minutes to remove the solvent. Temporarily dry at 5 ° C for 5-30 minutes to cure appropriately. Thereafter, the surface is exposed using a flat plate having good release properties (for example, a glass plate surface-treated with fluorine resin) or the like, and is subjected to 140 ° C or more, preferably 180 ° C under normal pressure or reduced pressure. It is preferable to heat and cure at a temperature of C to 300 ° C. for 112 hours, preferably 2 to 5 hours to form a spacer.
- the paste or slurry yarn composition for a spacer can be applied to a sealing plate with a brush, a spray, a dispenser or the like, and when the composition for a spacer contains a solvent, After coating, the solvent can be removed by heating.
- the spacer composition is pressurized and heated in that state to cure the spacer composition.
- the substrate on which the organic EL structure has been formed in advance by the above-described method and the adhesive applied to the surface of the spacer in the second step are brought into close contact with each other.
- the adhesive is irradiated with ultraviolet rays to be cured and sealed.
- the method of irradiating the ultraviolet rays is not particularly limited, but examples of the light source used include a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, a xenon lamp, and a tungsten lamp.
- the irradiation time varies depending on the light source used. For example, when a light source having a wavelength of 300 to 450 nm is used, it is preferable to perform ultraviolet irradiation at a wavelength of 350 nm, preferably 30 to 250 mWZcm 2 , for 30 seconds to 15 minutes. Specifically, it is preferable that the irradiation is performed for 1 minute at 100 mWZcm 2 so that the integrated light amount is about 6000 mj / cm 2 .
- the adhesive in order to more reliably cure the adhesive, it is preferable to further heat at about 75 to 85 ° C for about 1 hour after performing the ultraviolet irradiation. If heating in this temperature range, organic The adhesive can be sufficiently cured to the inside without adversely affecting the EL structure.
- the first and third steps are performed in a sealing gas atmosphere such as an inert gas such as He, N, or Ar.
- a sealing gas atmosphere such as an inert gas such as He, N, or Ar.
- the moisture content of the sealing gas is desirably 100 ppm or less, preferably 10 ppm or less, and particularly preferably 1 ppm or less. Although there is no particular lower limit for this water content, it is usually about 0.1 ppm.
- the production method of the present invention is not limited to this.
- the method further comprises a surface treatment step of forming a hydrophilic group on the surface of the spacer formed in the first step.
- a method for forming a hydrophilic group on the surface of the spacer a method of irradiating the surface of the spacer with ultraviolet light or a method of applying a silane coupling agent to the surface of the spacer is preferable. It is listed.
- the hydrophilic group formed on the surface of the spacer is not particularly limited, but a hydroxyl group is also preferred because of its ease of formation.
- a spacer is formed on the substrate, an organic EL structure is formed on the substrate, an adhesive is applied to the surface of the spacer, and the adhesive and the sealing plate are brought into close contact with each other. It may be cured and sealed.
- the organic EL device of the present invention can be driven by a direct current or a pulse, and can also be driven by an alternating current.
- the applied voltage is usually about 2-30V.
- FIG. 2 is a schematic cross-sectional view showing another configuration example of the organic EL device of the present invention.
- an organic EL element 1 is formed by sealing an organic EL structure 3 formed on a substrate 2 at a predetermined interval so as to cover the organic EL structure 3.
- the water trapping layer 7 is provided on the inner surface of the plate 4 and the sealing plate 4. Further, in order to hold the substrate 2 and the sealing plate 4 at a predetermined interval, a spacer 6 is sandwiched between them. The joining surface between the substrate 2 and the spacer 6 is joined via an adhesive 5.
- the water-trapping layer in the present invention is not particularly limited as long as it is a layer containing a substance having water absorbency.
- sealing resin described in JP-A-2001-57287, JP-A-2000-195662 The water-trapping layer described in the gazette, the hygroscopic layer described in JP-A-2003-317934, and the like are preferable.
- the water-trapping layer is, for example, a layer in which a mixture of a desiccant and a resin mixture is disposed on the inner surface of a sealing plate that seals the organic EL structure. No.
- the water-trapping layer enables the organic EL structure to be strongly sealed with a very simple structure, furthermore, to effectively remove water and prevent the element from deteriorating with time.
- the resin compound is the lowest among the organic materials constituting the organic EL structure other than the dopant, and needs to be curable at a temperature of 20 ° C with respect to the glass transition temperature Tg. It is.
- the desiccant can be easily fixed to the inner surface of the sealing plate. That is, a mixture of the uncured resin compound and the desiccant is applied to the inner surface of the sealing plate. * Then, the mixture is adhered to the substrate on which the organic EL structure is formed. What is necessary is just to heat-process and harden.
- the curing temperature is the lowest among the organic materials constituting the organic EL structure excluding the dopant, and is preferably lower than + 20 ° C with respect to the glass transition temperature Tg! , And more preferably at a temperature in the range of ⁇ 20 ° C.
- the heat curing and the temperature treatment of the organic material can be performed at the same time, the physical properties of the interface of the organic layer are improved, the life of the device is drastically extended, and the emission characteristics are also improved. . If the treatment temperature is lower than the glass transition temperature Tg-20 ° C, the effect of the heat treatment will not be obtained. On the other hand, if the temperature is higher than Tg + 20 ° C, the organic layer is softened, and the physical properties of the film interface change, so that the performance as designed cannot be obtained.
- the resin compound is not particularly limited as long as it satisfies the above-mentioned curing conditions, has adhesive properties that can be fixed to the inner surface of the sealing plate, and does not adversely affect the organic EL structure due to outgassing or the like. It is not done. Further, those which are reactive with the desiccant to be mixed and those whose curability is significantly reduced by the addition of the desiccant are also not preferred. Care must also be taken when using hygroscopic fats in order to promote the deterioration of the desiccant.
- An example of such a resin compound is a curable liquid silicone rubber. At least in the state of application, it must be in liquid or paste form.
- so-called RTV liquid silicone rubber can be used.
- condensed liquid silicone rubber is of a type in which curing proceeds in the presence of moisture, and there is a problem such as a decrease in curability due to the presence of a desiccant.
- silicone rubber so that the characteristics of the desiccant will not be degraded by the contained moisture or chemical reaction. Further, although it depends on the material of the sealing plate, a material having good adhesion to the sealing plate is preferable. Since silicone rubber has relatively high moisture permeability, not only the desiccant exposed on the resin surface but also the desiccant dispersed in the resin can efficiently capture moisture.
- the desiccant is not particularly limited as long as it can exhibit a moisture absorbing effect in the resin, and examples thereof include an alkali metal, an alkaline earth metal, an alkali metal and an alkaline earth metal.
- barium oxide and pentoxide are preferred because they have a strong water-supplying ability even in a low-humidity environment.
- complex oxides containing 60% by mass or more of one or two or more substances selected from alkali metal oxides, calcium oxide, and strontium oxide are difficult to handle in the production process. Viewpoint of management efficiency Preferred.
- calcium oxide and Z or a composite acid oxide thereof are particularly preferable because they are easy to handle and hard to re-release after once capturing moisture.
- synthetic zeolite is unlikely to re-release the absorbed moisture even at a high temperature of about 100 ° C.
- it is preferable because it shows high hygroscopicity even under low temperature conditions and can be activated under the above-mentioned temperature atmosphere in the present invention.
- it is preferable to use the organic EL device of the present invention, which has low reproducibility of moisture absorption characteristics and small variation when mass-produced.
- these desiccants are used in the form of powder, particles, or pellets.
- a powder or a particle, or a mixed state of particles and a powder is preferable.
- the powder is in the form of powder and the average particle size is 20 m or less. More preferably, the average particle size is 0.1 to 10 m.
- the maximum particle size of the powder is at most 500 m, preferably at most 100 m, more preferably at most 1. This is because, in the present invention, when the water-trapping layer is disposed inside the organic EL element, unevenness in film thickness, abnormal projections, and the like may occur. Further, it is preferable that the maximum particle size is smaller than the target average thickness of the water trapping layer. It is particularly preferable that the thickness is 70% or less, more preferably 50% or less than the thickness of the water catching layer, since a uniform water catching layer is easily formed.
- the content of the desiccant is preferably 5 to 70% by mass, particularly 10 to 60% by mass with respect to all components including the resin compound. If the content of the desiccant is less than 5% by mass, the water-absorbing effect of the desiccant will be insufficient, and if it exceeds 70% by mass, it will be difficult to fix and hold the desiccant with the resin conjugate. May drop off, which may adversely affect the device.
- the desiccant is usually used in a state dispersed in the resin.
- the application amount of the mixture of the above-mentioned resin and the desiccant depends on the specific gravity of the material used, but is 0.001 to 0.5 g / cm 2 , particularly 0.01 to 0.1 g / cm 2 . It is preferably about lg / cm 2 .
- a dispenser or the like may be used as a coating method.
- a method may be used in which a sheet or the like formed in a desired shape in advance is placed on a sealing plate.
- the method of forming the water-trapping layer is not limited to these.
- Other methods of forming the water-trapping layer used in the present invention include, for example, a desiccant, a high molecular weight, a curable oligomer, and a surfactant.
- an organic metal compound such as a silane coupling agent or a titanate coupling agent, or an inorganic material such as a low-melting glass powder by heating or humidification such as a low-melting glass powder. What forms a compound may be used. Then, a fluid mixture formed by mixing with water and Z or an organic solvent is placed on the sealing plate. It may be arranged in a sheet shape.
- a method may be used in which an adhesive layer and a Z or adhesive layer are first formed on a sealing plate, and then a desiccant is sprayed thereon and, if necessary, adhered by a press or the like. Further, a method of laminating these layers can also be adopted. From the viewpoint that the efficiency of the production process and a fixed amount are uniformly fixed and that various shapes can be easily handled, a method in which a desiccant is uniformly dispersed in the binder is applied to the sealing plate. preferable. Also, a plurality of drying agents may be mixed and formed, or different types of water-trapping layers may be laminated.
- the water-trapping layer disposed on the sealing plate may have a structure in which only the surface layer of the water-trapping layer is in a solid state and the inside is in a fluid state. It is completely immobilized in a solid state to the inside.
- More specific methods for forming the water-trapping layer include, for example, (A) a metal oxide (for example, calcium oxide powder or barium oxide) and an organic binder (for example, Asahi Glass Co., Ltd. 1028) or a method of drying a paste mixture of poly (methyl methacrylate) to form a water-trapping layer, or (B) a desiccant (for example, calcium oxide) and an inorganic binder (for example, ASF1304M manufactured by Asahi Glass Co., Ltd.
- a method of forming a water-trapping layer by mixing a paste with an organic binder (for example, polydimethylstyrene), applying the mixture, and then thermally decomposing the organic binder.
- composition 1 This yarn composition for a spacer is hereinafter referred to as “composition 1”.
- the obtained composition 1 was heated on a hot plate at 200 ° C. for 1 hour, and further heated at 250 ° C. for 1 hour to be cured.
- the obtained cured product was cut out into a sheet of 3 mm ⁇ 3 mm ⁇ 100 ⁇ m to obtain samples A and B.
- the obtained sample A was placed in a desiccator for 12 to 12 hours and dried, and then the sample A was heated to 127 ° C., and the mass loss was measured by a differential thermobalance (TG-DTA, Mac Science). (Manufactured by the company). This mass loss was defined as the mass loss before water absorption. The measurement was performed in dry air, and the heating rate was 10 ° CZmin.
- TG-DTA differential thermobalance
- the obtained sample B was immersed in pure water at 75 ° C for 1 hour to absorb water, and then the sample B was heated to 127 ° C to measure the weight loss. (TG-DTA, manufactured by Mac Science). This mass loss was defined as the mass loss after water absorption. The measurement was performed in dry air, and the heating rate was 10 ° CZmin.
- UV-curable epoxy ⁇ (30Y- 437, manufactured by Three Bond Co., Ltd.), more ultraviolet irradiation apparatus, the ultraviolet intensity at 190- 200mWZcm 2 at a wavelength of 350 nm, after shines ultraviolet irradiation for 3 minutes, 1 hour heating at 80 ° C And cured.
- the obtained cured product was cut into a sheet having a size of 3 mm X 3 mm X 70-110 m to obtain samples C and D.
- the above-mentioned basic composition 1 was applied to the periphery of one surface of a sealing plate (a soda-lime glass plate having a thickness of 1.1 mm) using a dispenser so as to form a frame.
- the soda-lime glass substrate coated with the spacer composition was placed in an oven, dried at 120 ° C for 1 hour, and then reduced to 1.33 ⁇ 10 2 Pa and dried at 170 ° C for 10 minutes. .
- a glass flat plate surface-treated with CytoSup Jing 809SP2 manufactured by Asahi Glass Co., Ltd.
- CytoSup Jing 809SP2 manufactured by Asahi Glass Co., Ltd.
- the mixture is heated at 200 ° C for 1 hour under normal pressure, and further heated and cured at 220 ° C for 4 to 5 hours.
- the glass plate which was gradually cooled to room temperature and surface-treated with a fluorine resin, was peeled off from the cured product (spacer) of the spacer composition, and the mercury lamp was applied to the spacer. (185 nm / 254 nm), the UV intensity at a wavelength of 250 nm is 8—10 mWZcm 2 UV irradiation was performed for the time shown in Table 3 below.
- a spacer is formed in the same manner as in Example 2-4 except that the height of the spacer is 500 ⁇ m, and ultraviolet irradiation is performed.
- SiO was deposited on a soda lime glass substrate (1.1 mm thick) to serve as a substrate.
- a 20 nm thick barrier layer is formed, and then ITO is deposited to form a 200 nm thick hole injection electrode.
- the sheet resistance is 7 ⁇ square.
- copper phthalocyanine as a hole injecting layer is deposited to a thickness of 20 nm by vacuum evaporation, and then TPTE represented by the following structure is deposited to form a hole transporting layer having a thickness of 40 nm.
- tris (8-quinolinolato) aluminum (Alq) and rubrene are co-evaporated to a thickness of 60 nm using different boats to form a light emitting layer.
- LiF is deposited to a thickness of 0.5 nm
- A1 is deposited to a thickness of 100 nm to form an electron injection electrode, and an organic EL structure is formed on the substrate.
- a UV curable epoxy adhesive is applied to a part of the spacer of the sealing plate having the water trapping layer and the spacer obtained above with a dispenser, and the substrate having the organic EL structure obtained above is applied. Paste. After that, the adhesive is cured and sealed by an ultraviolet irradiation device to obtain an organic EL element.
- the thickness of the adhesive layer is about 70 m.
- the organic EL device was stored in an environment at 60 ° C and a humidity of 90 RH%, and the light emitting state was inspected every 100 hours.
- the area of the non-light emitting part was 10% of the area of the initial light emitting part.
- the time to reach (T) is measured. The results are shown in Table 3 below.
- composition 2 A spacer composition was prepared in the same manner as in Composition 1, except that a spherical silica filler having an average particle size of 1 ⁇ m was used. This composition is hereinafter referred to as “composition 2”.
- an organic EL device was prepared in the same manner as in Examples 2-7, and the luminescence characteristics were evaluated.
- Example 8 Example 9 Example 10 0 Example 11 Example 1 2 Example 1 3
- compositions 1 and 2 The same methylphenol silicone resin as used in the above compositions 1 and 2 was mixed with a 3 ⁇ m or 1 ⁇ m spherical silica filler at the ratio shown in Table 5 below, and the mixture was mixed in the same manner as described above.
- a silane coupling agent KBM 403, manufactured by Shin-Etsu Chemical Co., Ltd.
- KBM 403 manufactured by Shin-Etsu Chemical Co., Ltd.
- the blending amounts in Table 5 indicate the mass% of each component with respect to the mass of the whole yarn.
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Abstract
Description
Claims
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JP2006511225A JP4506753B2 (ja) | 2004-03-18 | 2005-03-17 | 有機el素子およびその製造方法 |
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WO2005091682A1 true WO2005091682A1 (ja) | 2005-09-29 |
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Family Applications (1)
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PCT/JP2005/004829 WO2005091682A1 (ja) | 2004-03-18 | 2005-03-17 | 有機el素子およびその製造方法 |
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Country | Link |
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JP (1) | JP4506753B2 (ja) |
TW (1) | TW200601873A (ja) |
WO (1) | WO2005091682A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010021221A1 (ja) * | 2008-08-19 | 2010-02-25 | コニカミノルタホールディングス株式会社 | 有機エレクトロルミネセンス素子の製造方法 |
JP2010258025A (ja) * | 2009-04-21 | 2010-11-11 | Nec Tokin Corp | 積層型圧電アクチュエータ |
JP2013530254A (ja) * | 2010-03-22 | 2013-07-25 | サエス ゲッターズ ソチエタ ペル アツィオニ | 水分感受性デバイスの保護用組成物 |
CN104629720A (zh) * | 2013-11-09 | 2015-05-20 | 吉林奥来德光电材料股份有限公司 | 含联苯核心的有机发光化合物及在电致发光器件中的应用 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20120079319A (ko) * | 2011-01-04 | 2012-07-12 | 삼성모바일디스플레이주식회사 | 평판 디스플레이 장치 및 유기 발광 디스플레이 장치 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001207152A (ja) * | 2000-01-28 | 2001-07-31 | Minoru Yamada | 封着用材料および封着されたガラス構造体 |
JP2003317934A (ja) * | 2002-04-22 | 2003-11-07 | Asahi Glass Co Ltd | 有機el表示装置とその製造方法 |
JP2004122112A (ja) * | 2002-08-02 | 2004-04-22 | Seiko Epson Corp | 液滴吐出装置、電気光学装置の製造方法、電気光学装置および電子機器 |
JP2004162039A (ja) * | 2002-10-22 | 2004-06-10 | Sophia Product:Kk | 光素子用の封着材組成物、封着構造体および光素子 |
-
2005
- 2005-03-17 WO PCT/JP2005/004829 patent/WO2005091682A1/ja active Application Filing
- 2005-03-17 JP JP2006511225A patent/JP4506753B2/ja not_active Expired - Fee Related
- 2005-03-18 TW TW094108469A patent/TW200601873A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001207152A (ja) * | 2000-01-28 | 2001-07-31 | Minoru Yamada | 封着用材料および封着されたガラス構造体 |
JP2003317934A (ja) * | 2002-04-22 | 2003-11-07 | Asahi Glass Co Ltd | 有機el表示装置とその製造方法 |
JP2004122112A (ja) * | 2002-08-02 | 2004-04-22 | Seiko Epson Corp | 液滴吐出装置、電気光学装置の製造方法、電気光学装置および電子機器 |
JP2004162039A (ja) * | 2002-10-22 | 2004-06-10 | Sophia Product:Kk | 光素子用の封着材組成物、封着構造体および光素子 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010021221A1 (ja) * | 2008-08-19 | 2010-02-25 | コニカミノルタホールディングス株式会社 | 有機エレクトロルミネセンス素子の製造方法 |
JP5472107B2 (ja) * | 2008-08-19 | 2014-04-16 | コニカミノルタ株式会社 | 有機エレクトロルミネセンス素子の製造方法 |
JP2010258025A (ja) * | 2009-04-21 | 2010-11-11 | Nec Tokin Corp | 積層型圧電アクチュエータ |
JP2013530254A (ja) * | 2010-03-22 | 2013-07-25 | サエス ゲッターズ ソチエタ ペル アツィオニ | 水分感受性デバイスの保護用組成物 |
CN104629720A (zh) * | 2013-11-09 | 2015-05-20 | 吉林奥来德光电材料股份有限公司 | 含联苯核心的有机发光化合物及在电致发光器件中的应用 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005091682A1 (ja) | 2008-02-07 |
JP4506753B2 (ja) | 2010-07-21 |
TW200601873A (en) | 2006-01-01 |
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